/*
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.l2j.gameserver.skills.effects;

import java.util.logging.Logger;

import net.sf.l2j.gameserver.geoengine.GeoData;
import net.sf.l2j.gameserver.model.L2Effect;
import net.sf.l2j.gameserver.model.Location;
import net.sf.l2j.gameserver.network.serverpackets.FlyToLocation;
import net.sf.l2j.gameserver.network.serverpackets.FlyToLocation.FlyType;
import net.sf.l2j.gameserver.network.serverpackets.ValidateLocation;
import net.sf.l2j.gameserver.skills.Env;

final class EffectThrowUp extends L2Effect
{
    private static final Logger _log = Logger.getLogger(EffectThrowUp.class.getName());

    private int _x, _y, _z;

    public EffectThrowUp(Env env, EffectTemplate template)
    {
        super(env, template);
    }

    @Override
	public EffectType getEffectType()
    {
        return EffectType.THROW_UP;
    }

    @Override
	public boolean onStart()
    {
        // Get current position of the L2Character
        final int curX = getEffected().getX();
        final int curY = getEffected().getY();
        final int curZ = getEffected().getZ();

        // Calculate distance between effector and effected current position
        double dx = getEffector().getX() - curX;
        double dy = getEffector().getY() - curY;
        double dz = getEffector().getZ() - curZ;

        double distance = Math.sqrt(dx * dx + dy * dy);
        if (distance > 2000)
        {
            _log.info("EffectThrow was going to use invalid coordinates for characters, getEffected: "+curX+","+curY+" and getEffector: "+getEffector().getX()+","+getEffector().getY());
            return false;
        }

        int offset = Math.min((int) distance + getSkill().getFlyRadius(), 1400);

        double cos;
        double sin;

        // approximation for moving further when z coordinates are different
        // TODO: handle Z axis movement better
        offset += Math.abs(dz);
        if (offset < 5)
            offset = 5;

        // If no distance
        if (distance < 1)
            return false;

        // Calculate movement angles needed
        sin = dy / distance;
        cos = dx / distance;

        // Calculate the new destination with offset included
        _x = getEffector().getX() - (int) (offset * cos);
        _y = getEffector().getY() - (int) (offset * sin);
        _z = getEffected().getZ();

        Location destiny = GeoData.getInstance().moveCheck(getEffected().getX(), getEffected().getY(), getEffected().getZ(), _x, _y, _z);
        _x = destiny.getX();
        _y = destiny.getY();

        getEffected().broadcastPacket(new FlyToLocation(getEffected(), _x, _y, _z, FlyType.THROW_UP));
        return true;
    }

    /**
     * 
     * @see net.sf.l2j.gameserver.model.L2Effect#onActionTime()
     */
    @Override
	public boolean onActionTime()
    {
        return false;
    }

    @Override
	public void onExit()
    {
        getEffected().setXYZ(_x, _y, _z);
        getEffected().broadcastPacket(new ValidateLocation(getEffected()));
    }
}